Passive and active electromagnetic stabilization of free-surface liquid metal flows

Autor:	Mirhoseini, S. M. H., Diaz-Pacheco, R. R., Volpe, F. A.
Rok vydání:	2017
Předmět:	Physics - Plasma Physics Physics - Fluid Dynamics
Druh dokumentu:	Working Paper
Popis:	Free-surface liquid metal flows tend to be uneven due to instabilities and other effects. Some applications, however, require constant, uniform liquid metal thickness. This is for example the case of liquid walls in nuclear fusion reactors. With this motivation, here we present experimental results on the stabilization of a free-surface flow of Galinstan. The flow was sustained by an electromagnetic induction pump featuring rotating permanent magnets. Evidence is reported of the flowing Galinstan layer becoming flatter in the presence of a sufficiently strong magnetic field, either alone (passive stabilization) or in combination with an electrical current passing through the liquid metal (active stabilization). The results are interpreted in terms of an effective viscosity and effective gravity, respectively. Comment: 10 pages, 8 figures, accepted for publication in Magnetohydrodynamics (http://mhd.sal.lv) -special issue for 10th PAMIR Int.Conf.Fundam.& Applied MHD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1702.01040 Zobrazit plný text záznamu View this record from Arxiv